EP0250981A2
Expired / Lapsed
EP
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Method for making bisimides
Assignee: General Electric Co
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Filing: 1987-06-12
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Granted: —
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Expires: 2007-06-12
Abstract
Abstract A method is provided for making bisphthalimides by heating an N-organonitrophthalimide in the presence of an aprotic organic solvent in an alkali metal carboxylate.
Inventors
- 👤 Donald Richard Berdahl
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 15:34
CPC Classifications
C; C07; C07D; C07D209/00; C07D209/02; C07D209/44; C07D209/48
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
61 words
A method for making bisimide which comprises (1) heating nitrophthalimide of the formula to a temperature in the range of from 100°C to 400°C in the presence of dipolar aprotic solvent and an effective amount of an alkali metal carboxylate, and (2) recovering bisimide of Formula 2 from the resulting mixture of (1), where R is C (1-14) monovalent organic radical.
Claim 2
Independent Claim
61 words
A method for making bisimide which comprises (1) heating nitrophthalimide of the formula to a temperature in the range of from 100°C to 400°C in the presence of dipolar aprotic solvent and an effective amount of an alkali metal carboxylate, and (2) recovering bisimide of Formula 2 from the resulting mixture of (1), where R is C (1-14) monovalent organic radical.
Claim 3
Dependent Claim
16 words
A method in accordance with claim 1, where the alkali metal carboxylate is a potassium alkylcarboxylate.
Claim 4
Dependent Claim
16 words
A method in accordance with claim 1, where the alkali metal carboxylate is a cesium alkylcarboxylate.
Claim 5
Dependent Claim
15 words
A method in accordance with claim 1, where the alkali metal carboxylate is potassium acetate.
Claim 6
Dependent Claim
15 words
A method in accordance with claim 1, where the alkali metal carboxylate is cesium acetate.
Claim 7
Dependent Claim
15 words
A method in accordance with claim 1, where the alkali metal carboxylate is potassium propionate.
Claim 8
Dependent Claim
15 words
A method in accordance with claim 1, where the alkali metal carboxylate is cesium propionate.
Claim 9
Dependent Claim
15 words
A method in accordance with claim 1, where the alkali metal carboxylate is sodium benzoate.
Claim 10
Dependent Claim
13 words
A method in accordance with claim 1, where the aprotic solvent is dimethylformamide.
References Cited (Backward Citations)
No citation records indexed.
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